Source: Player's Handbook
Prerequisite: Level 4+, Intelligence, Wisdom, or Charisma 13+)
You gain the following benefits.
Ability Score Increase. Increase your Intelligence, Wisdom, or Charisma score by 1, to a maximum of 20.
Ritual Spells. Choose a number of level 1 spells equal to your Proficiency Bonus that have the Ritual tag. You always have those spells prepared, and you can cast them with any spell slots you have. The spells’ spelicasting ability is the ability increased by this feat. Whenever your Proficiency Bonus increases thereafter, you can add an additional level 1 spell with the Ritual tag to the spells always preared with this feature.
Quick Ritual. With this benefit, you can cast a Ritual spell that you have
prepared using its regular casting time rather than the extended time for a Ritual. Doing so
doesn't require a spell slot.